Continuity mistake: When Theo says, "You can pull them [flowers] out if you want to", there's one flower that is slightly pulled away from the vase, drooping below the others. When Felix [Bill Murray] is next to the flowers, there is not a flower pulled out at first, but there is a few camera shifts later. (00:34:00 - 00:36:37)
Continuity mistake: The protagonist just arrived to his college. Long shot as he gets off the taxi, and to the right of the frame you see a group of 3 girls crossing the street and walking on the lawn. Cut, and the 3 girls have yet to cross. (00:07:00)
Continuity mistake: Isaac is wearing tan or khaki pants but the video of him getting "beamed up" to the spaceship shows dark blue pants. (00:18:15)
Continuity mistake: Theodore rides once the tiny rollercoaster; the cart comes to a full stop and his left foot is in the space between the bars, but in the next shot the left foot is on the outside. (00:48:00)
Continuity mistake: When Dellinger is about to leave home to Chicago her wife's hand swaps between being on the boy's shoulder or over his left bicep.
Continuity mistake: Running away from the guard after the burglary, Joey and Matt went down a fairly steep hill in the woods. After passing the hole, they walked up a small embankment to go toward home. The next morning, Joey is riding his bike down a steep hill (the one that was before the hole?) - so steep he has to get off his bike and push it. Halfway down, the camera shifts and Joey is suddenly on TOP of a small embankment, which appears to be the one he and Matt walked up the day before on their way home.
Continuity mistake: Maggie was holding two bottles (clear containing a green liquid) in her right hand and set them on the table together with one at an angle behind the other. She moved her hand away and when the camera shifted to a wide view, the bottles were side-by-side (horizontal to the screen) with more space between them. Also, both bottles were almost full, but had less in them when Maggie handed one to Grace at the airport. (Maggie may have had a sip out of hers, but not Grace's; both looked unopened). (00:03:33 - 00:04:25)
Continuity mistake: Jim's Dodge Ram with a camper seems to change colors, mostly variations of gray. Initially, both are a light gray. Other times, both look white - or even blue. Sometimes, the truck is dark gray and the camper is white. (00:03:05 - 00:25:12)
Continuity mistake: The first time we see the girl the main character fawns on, people on the background keep changing between shots during the beach volley game. (00:08:20)